机构地区:[1]新疆农业大学动物科学学院动物营养实验室,乌鲁木齐830052 [2]伊犁职业技术学院,伊宁835000 [3]新疆农业大学草业环境工程学院,乌鲁木齐830052
出 处:《中国畜牧兽医》2009年第7期56-60,共5页China Animal Husbandry & Veterinary Medicine
基 金:新疆肉用牛羊科学饲养技术集成与示范(200731135;200731135-2)
摘 要:选取体重(24.71kg±2.07kg)相近的4月龄哈萨克土种公羔羊20只,在伊犁昭苏马场特克斯河北岸天然草场进行了放牧,研究暖季放牧条件下羔羊血清生化指标与体重变化的关系。结果表明,4~8月龄羔羊月平均日增重依次为(175±34)g、(92±36)g、(158±46)g、(81±36)g,4~5月龄和6~7月龄平均日增重显著高于5~6月龄和7~8月龄(P<0.05)。血清生化指标中碱性磷酸酶(ALP)、乳酸脱氢酶(LDH)、谷草转氨酶(GOT)各月龄含量差异不显著(P>0.05);5、7月龄总蛋白(TP)含量高于4、8月龄,并显著高于6月龄(P<0.05);4、5月龄白蛋白(ALB)含量显著高于6、7、8月龄(P<0.05);5、7月龄球蛋白(GLB)含量分别高于4、6、8月龄,7月龄显著高于6月龄(P<0.05);4、6月龄白/球(A/G)高于5、8月龄,显著高于7月龄(P<0.05);尿素氮(BUN)含量4、5、7、8月龄间差异不显著(P>0.05),但显著高于6月龄(P<0.05);5、7月龄GLU含量显著高于6、8月龄(P<0.05);总胆固醇(TC)、谷丙转氨酶(GPT)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)含量在4~8月龄逐渐升高(HDL-C5月龄略有下降),TC、GPT含量相邻月龄间差异不显著(P>0.05),LDL-C、HDL-C含量7、8月龄显著高于4、5、6月龄(P<0.05);甘油三酯(TG)含量在整个试验期总体呈下降趋势,相邻月龄间仅7月龄含量显著高于8月龄(P<0.05);游离脂肪酸(FFA)含量8月龄显著高于其余各月龄(P<0.05),6月龄高于4月龄,并显著高于5、7月龄(P<0.01)。In the north bank of Turks river the YiLi natural grassland field select 20 4-month-old Kazakh lambs with the similar weight (24.71 kg± 2.07 kg), from 2008 May 15 to September 20 to test grazing lamb growth, feed intake determination, serum biochemical and hormonal. The results showed that :4 to 8-month-old lambs with average daily weight gain: (175±34) g, (92±36) g, (158±46) g, (81±36) g, lamb daily weight gain has two peaks: 4 to 5 months old and 6 to 7 months old, which were significantly higher than both 5-6 month old Iambs and 7to 8 month old lambs (P〈0.05), the changes in serum biochemical markers: there is no significant difference about ALP, LDH, GOT content between months (P〉0.05); TP content 5 to 7 months higher than 4 to 8 months, and significantly higher than 6 months old lamb (P〈0.05); ALB levels of 6, 7,8 months old twere significantly higher than 4,5 months old lamb (P〈0.05); GLB content of 5,7 months old lamb are higher than 4,6,8 month old lamb, 7-months-old lamb was significantly higher than 6 months old lamb (P〈0.05); A/G, 4,6 month old lamb was higher than 5,8 months old lamb, and which was also significantly higher than the 7-month-old lamb (P〈 0.05) ;BUN content, there was no significant difference among 4,5,7,8 months old lamb (P〉0.05), but every of them was significantly higher than 6 months old lamb (P〈0.05); GLU content, 5,7 months old lamb were significantly higher than 4, 6,8 months old lamb (P〈0.05) ; TC, GPT, LDL-C, HDL-C content, 4 to 8-month-old lamb gradually increased (HDL-C 5- month-old lamb decreased slightly), TC, GPT content difference between adjacent months was not significant (P〉0.05), LDL-C, HDL-C content of 7 to 8 months old lamb were significantly higher than 4,5,6 months old lamb (P〈0.05) ; TG content, the whole period with downward trend, only the adjacent inter-month-old lamb 7 months old lamb were significantly higher than the 8-month-old lamb (P〈0.05) ; FFA
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